I stayed here for a month and really enjoyed it. The location is very close to the BTS and the T-one building (my gym), easy to do pretty much anything on Sukhumvit.
I work at night most days and sleep during the day, this room is absolutely perfect for this with blackout curtains, it gets totally dark during the day with the curtains closed and the bed is insanely comfortable.
The host was really quick to answer questions and everything was pretty easy.
I would definitely stay again in the future, great value for the money.